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Old June 29th, 2006, 09:58 AM   #1
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Aspect HD to DV letterbox: settings?

Have Aspect HD 1440x1080i30 video (16x9 of course).

Need to quality downconvert to DV 720x480 4x3 letterboxed.

Created a standard 4x3 NTSC project in PPro 1.5.1, imported AHD video, placed it in the timeline, applied 34% scale in Motion section.

Looks OK on screen - letterboxed and correct proportions, as needed.

Trying to export in Microsoft DV (is that the one I should use?) all sorts of distortions creep in.

Proportions are now all wrong; video has pillar boxes on top of letterboxes; etc.

What are the correct export settings for my purpose - quality downconvert to DV 720x480 4x3 letterboxed?
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Old June 29th, 2006, 10:38 AM   #2
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Suggestion: I use PPro 2.0 now, but if you are down converting a 16:9 HD to DV, why not open a project as HDV, import the file you want to down convert, then use 16:9 DV as an output/rendered file from the original project ? Why go through the motion menu process. Are you saying that gives you the distorted file? If so, output it to a standard 4:3 DV file. Try those, and I think one will work.
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Old June 29th, 2006, 10:41 AM   #3
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Chris, I need 4x3 DV letterboxed out of the 16x9 AspectHD.

And I can't make it work, need to know exact export settings from PPro.
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Old June 29th, 2006, 10:54 AM   #4
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Don't mess with new 4x3 projects and motion. From your original HD project simply export movie to 4x3 DV 720x480 with a 0.9 pixel ratio. The letterboxing will be added automatically.
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Old June 29th, 2006, 12:12 PM   #5
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Thanks David, your suggestion worked.

However the resulting video displays very visible "running" line edge artifacts on horizontal/diagonal objects.

Is that a problem with PPro downconversion? Output DV settings are at 100% quality though.
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Old June 29th, 2006, 12:34 PM   #6
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You could also do a CineForm export to the same format to see if it is DV issue or a scaler issue. If is it simply aliasing you can place a blur filter (radius 2 will be ok) to limit aliasing.
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Old June 29th, 2006, 02:09 PM   #7
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Fantastic! With Fast Blur at 2.0 amount, no more running edges on DV copy!

Once again, thanks David!
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